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Obesity and cancer

Rapid responses are electronic comments to the editor. They are not journal articles. The BMJ reserves the right to remove responses which are being wilfully misrepresented as published articles.

Your name will be published with your response. Include your email address in the text of your response if you want others to see it.

Once published, you will not have the right to remove or edit your response. The BMJ may remove or edit responses at its absolute discretion.

A proportion of responses will, after editing, be published online and in the print journal as letters, which are indexed in PubMed. Rapid responses are not indexed in PubMed

Rapid responses have their own URL and are retrievable in an advanced search of thebmj.com in perpetuity.

If patients could recognise themselves, or anyone else could recognise a patient from your description, please obtain the patient's written consent to publication before sending your response. See our patient consent form.

A competing interest exists when professional judgment concerning a primary interest (such as patients' welfare or the validity of research) may be influenced by a secondary interest (such as financial gain or personal rivalry). Find out more.